Full Sun chlorine loss

[Morganbertrand90]

I know this may be a question with varying answers but I an looking to get a general range of acceptable chlorine loss during the day. I test water twice a day. Once at daybreak and again around 6 p.m. The morning test is just for chlorine levels and the afternoon is a full test to see what needs to be added. I use the pool math app to make adjustments to my water as needed. My morning test usually shows high enough levels of chlorine and my afternoon test is drastically lower. For example my test this morning showed 8.98 ppm FCL and 0.0 ppm combined. My test in the afternoon only shows 4.6 ppm of FCL.
FCL-4.6
PH-7.7
TA-178
CH-50
Cya-64

 

[texasAUtiger]

It doesn’t sound like you are using a TFP test kit with those numbers. What are you using?

 

[Morganbertrand90]

I am using a Lamotte ColorQ Pro11 digital tester. Sorry for some reason my signature isn't popping up with my information.

 

[texasAUtiger]

I asked the same question today, so this might be helpful:

Typical LC usage?

I realize this a question with a lot of variables, but my pool is new and I'm just trying to calibrate my expectations (and planning) for how much LC to have on hand, especially since LC is very difficult to find around town now, so... 15,600 IG with plaster, no SWCG, in the TX sun but I'd say...

www.troublefreepool.com

 

[Oly]

Try an Overnight Chlorine Loss Test if you pass this then you your daily FC loss is 4.3 at peak season. I was able to reduce my daily FC loss by partially shading the water with sail shades. We are on the downhill side now with days getting shorter so relief is in sight.

 

[Morganbertrand90]

I asked the same question today, so this might be helpful:

Typical LC usage?

I realize this a question with a lot of variables, but my pool is new and I'm just trying to calibrate my expectations (and planning) for how much LC to have on hand, especially since LC is very difficult to find around town now, so... 15,600 IG with plaster, no SWCG, in the TX sun but I'd say...

www.troublefreepool.com

Thanks for your help. It seems that my loss isn't abnormal seeing as my pool gets direct sunlight for 8 or more hours a day. The loss just seemed a bit excessive, so I was trying to see how more experienced owners were fairing this summer.

 

[Morganbertrand90]

Try an Overnight Chlorine Loss Test if you pass this then you your daily FC loss is 4.3 at peak season. I was able to reduce my daily FC loss by partially shading the water with sail shades. We are on the downhill side now with days getting shorter so relief is in sight.

I do an OCLT everyday now and haven't had one fail in the last week or so. I was coming off of an algea bloom so I'm still a little gun shy. I was just a little worried with the numbers because I don't remember a summer in the last few years where I've had to go through so much chlorine daily with this pool. Thanks for the information it is much appreciated. I will check into the sail shades and see if it is a viable option for me. My pool is abnormally shaped and large so covers have not every really been an option.

 

[texasAUtiger]

70k gallon pool is no doubt gonna eat some LC! ;-)